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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/html_viewer/setup.h"
#include <string>
#include "base/bind.h"
#include "base/command_line.h"
#include "base/i18n/icu_util.h"
#include "base/logging.h"
#include "components/html_viewer/blink_platform_impl.h"
#include "components/html_viewer/media_factory.h"
#include "components/scheduler/renderer/renderer_scheduler.h"
#include "gin/v8_initializer.h"
#include "mojo/application/public/cpp/application_impl.h"
#include "third_party/WebKit/public/web/WebKit.h"
#include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_paths.h"
#include "v8/include/v8.h"
#if defined(OS_ANDROID)
#include "components/html_viewer/ui_setup_android.h"
#else
#include "components/html_viewer/ui_setup.h"
#endif
namespace html_viewer {
namespace {
// Disables support for (unprefixed) Encrypted Media Extensions.
const char kDisableEncryptedMedia[] = "disable-encrypted-media";
// Prevents creation of any output surface.
const char kIsHeadless[] = "is-headless";
// Specifies the flags passed to JS engine.
const char kJavaScriptFlags[] = "js-flags";
size_t kDesiredMaxMemory = 20 * 1024 * 1024;
// Paths resources are loaded from.
const char kResourceIcudtl[] = "icudtl.dat";
const char kResourceResourcesPak[] = "html_viewer_resources.pak";
const char kResourceUIPak[] = "ui_test.pak";
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
const char kResourceNativesBlob[] = "natives_blob.bin";
const char kResourceSnapshotBlob[] = "snapshot_blob.bin";
#endif
std::set<std::string> GetResourcePaths() {
std::set<std::string> paths;
paths.insert(kResourceResourcesPak);
paths.insert(kResourceIcudtl);
paths.insert(kResourceUIPak);
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
paths.insert(kResourceNativesBlob);
paths.insert(kResourceSnapshotBlob);
#endif
return paths;
}
} // namespace
Setup::Setup(mojo::ApplicationImpl* app)
: app_(app),
resource_loader_(app->shell(), GetResourcePaths()),
is_headless_(
base::CommandLine::ForCurrentProcess()->HasSwitch(kIsHeadless)),
did_init_(false),
device_pixel_ratio_(1.f),
discardable_memory_allocator_(kDesiredMaxMemory),
compositor_thread_("compositor thread") {
if (is_headless_)
InitHeadless();
}
Setup::~Setup() {
if (blink_platform_) {
renderer_scheduler_->Shutdown();
blink::shutdown();
}
}
void Setup::InitHeadless() {
DCHECK(!did_init_);
is_headless_ = true;
InitIfNecessary(gfx::Size(1024, 1024), 1.f);
}
void Setup::InitIfNecessary(const gfx::Size& screen_size_in_pixels,
float device_pixel_ratio) {
if (did_init_)
return;
DCHECK_NE(0.f, device_pixel_ratio);
did_init_ = true;
device_pixel_ratio_ = device_pixel_ratio;
screen_size_in_pixels_ = screen_size_in_pixels;
if (!resource_loader_.BlockUntilLoaded()) {
// Assume on error we're being shut down.
app_->Terminate();
return;
}
ui_setup_.reset(new UISetup(screen_size_in_pixels, device_pixel_ratio));
base::DiscardableMemoryAllocator::SetInstance(&discardable_memory_allocator_);
renderer_scheduler_ = scheduler::RendererScheduler::Create();
blink_platform_.reset(new BlinkPlatformImpl(app_, renderer_scheduler_.get()));
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
CHECK(gin::V8Initializer::LoadV8SnapshotFromFD(
resource_loader_.ReleaseFile(kResourceNativesBlob).TakePlatformFile(), 0u,
0u,
resource_loader_.ReleaseFile(kResourceSnapshotBlob).TakePlatformFile(),
0u, 0u));
#endif
blink::initialize(blink_platform_.get());
base::i18n::InitializeICUWithFileDescriptor(
resource_loader_.ReleaseFile(kResourceIcudtl).TakePlatformFile(),
base::MemoryMappedFile::Region::kWholeFile);
ui::RegisterPathProvider();
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
logging::LoggingSettings settings;
settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
logging::InitLogging(settings);
// Display process ID, thread ID and timestamp in logs.
logging::SetLogItems(true, true, true, false);
if (command_line->HasSwitch(kDisableEncryptedMedia))
blink::WebRuntimeFeatures::enableEncryptedMedia(false);
if (!is_headless_) {
ui::ResourceBundle::InitSharedInstanceWithPakFileRegion(
resource_loader_.ReleaseFile(kResourceResourcesPak),
base::MemoryMappedFile::Region::kWholeFile);
// TODO(sky): why is this always using 100?
ui::ResourceBundle::GetSharedInstance().AddDataPackFromFile(
resource_loader_.ReleaseFile(kResourceUIPak), ui::SCALE_FACTOR_100P);
}
compositor_thread_.Start();
media_factory_.reset(
new MediaFactory(compositor_thread_.message_loop_proxy(), app_->shell()));
if (command_line->HasSwitch(kJavaScriptFlags)) {
std::string flags(command_line->GetSwitchValueASCII(kJavaScriptFlags));
v8::V8::SetFlagsFromString(flags.c_str(), static_cast<int>(flags.size()));
}
}
} // namespace html_viewer
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